CN101017930B - Electric tuning micro-band antenna - Google Patents
Electric tuning micro-band antenna Download PDFInfo
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- CN101017930B CN101017930B CN2007100174681A CN200710017468A CN101017930B CN 101017930 B CN101017930 B CN 101017930B CN 2007100174681 A CN2007100174681 A CN 2007100174681A CN 200710017468 A CN200710017468 A CN 200710017468A CN 101017930 B CN101017930 B CN 101017930B
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- dielectric substrate
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- radiation patch
- feed line
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Abstract
The disclosed electric tuning microstrip antenna comrises: a microstrip feed line pasted on following substrate, a feed-layer medium substrate, a ferroelectric radiation-layer medium substrate, a metal ground level between last two substrates to both separate and provide a gap to couple the microstrip feed line and radiation substrate, a radiation paster, and a dc feed line to force dc offset voltage between the radiation substrate and ground level. Compared with prior art, this invention reduces loss and cost, and simple on sturcture and technology.
Description
Technical field
The present invention relates to a kind of electric tuning micro-band antenna.
Background technology
Antenna array when rapid frequency scanning, radar when frequency agility is worked or antenna all need to regulate fast the operating frequency of antenna when sharing in the timesharing aperture.And traditional broad-band antenna needs the whole working frequency range of complete covering, therefore inevitably can introduce a lot of noises.The frequency number of double frequency or multifrequency antenna is difficult to accomplish very big, and each Frequency point also must satisfy certain relation, is not suitable for frequency agility work, but therefore the antenna of electric tuning is just very useful.
With reference to Fig. 6, document " Frequency agile slot-fed patch antenna; G.Le Ray; Electronics Letters; 1996; Vol.32; No.1, p2-3 " a kind of microstrip antenna that adopts variable capacitance diode to realize continuous tuning disclosed; comprise microstrip feed line 1; feed layer dielectric substrate 2; metal ground 3; coupling slit 4; radiating layer dielectric substrate 5, radiation patch 6, dc feeder 7, hole 8, grounding probe 9 and variable capacitance diode 10, accompany metal ground 3 between feed layer dielectric substrate 2 and the radiating layer dielectric substrate 5, microstrip feed line 1 is attached on the feed layer dielectric substrate 2, radiation patch 6 is attached to radiating layer dielectric substrate 5, microstrip feed line 1 separates with radiation patch 6 metal grounds 3, between radiation patch 6 and metal ground 3, be connected with variable capacitance diode 10, the positive pole of variable capacitance diode 10 is connected with radiation patch 6, negative pole is connected with metal ground 3, realize electric tuning by the Dc bias that changes variable capacitance diode 10, Dc bias is added on the radiation patch 6 by dc feeder 7 and the grounding probe 9 that passes hole 8 on the metal ground 3, and it is 2.2 generic media material that feed layer dielectric substrate 2 and radiating layer dielectric substrate 5 all adopt dielectric constant.This electric tuning micro-band antenna volume is little, cost is low, is widely adopted by everybody always.But owing to adopt variable capacitance diode, thus just bigger in the loss of high band, limited its application in higher frequency band especially millimeter wave, and structure is complicated.
Summary of the invention
In order to overcome prior art in big, the baroque deficiency of high band loss, the invention provides a kind of electric tuning micro-band antenna, adopt ferroelectric as the radiating layer dielectric substrate, be added in the resonance frequency that Dc bias between radiation patch and the metal ground changes antenna by change, realized high band low-loss electric tuning.
The technical solution adopted for the present invention to solve the technical problems: a kind of electric tuning micro-band antenna, comprise microstrip feed line, the feed layer dielectric substrate, metal ground, the radiating layer dielectric substrate, radiation patch and dc feeder, accompany metal ground between feed layer dielectric substrate and the radiating layer dielectric substrate, microstrip feed line is attached on the feed layer dielectric substrate, radiation patch is attached on the radiating layer dielectric substrate, microstrip feed line and radiation patch separate with metal ground, and by one on metal ground the coupling slit be coupled, described radiating layer dielectric substrate adopts ferroelectric to make, dc offset voltage is added between radiation patch and the metal ground by dc feeder, is characterized in that described dc feeder adopts the alternate high Low ESR low-pass filter structure of width.
The invention has the beneficial effects as follows: owing to adopt the little ferroelectric of loss as the radiating layer dielectric substrate, so compared with prior art, loss obviously reduces; And saved grounding probe and variable capacitance diode, and also noting be used in perforate on the metal ground, structure and technology are simple.
Below in conjunction with drawings and Examples the present invention is elaborated.
Description of drawings
Fig. 1 is an electric tuning micro-band antenna structural representation of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the structural representation of feed layer dielectric substrate and microstrip feed line among Fig. 1.
Fig. 4 be among Fig. 1 on the metal ground coupling slit schematic diagram.
Fig. 5 is the structural representation of radiating layer dielectric substrate and radiation patch and dc feeder among Fig. 1.
Fig. 6 is a prior art electric tuning micro-band antenna structural representation.
Among the figure, 1, microstrip feed line, 2, the feed layer dielectric substrate, 3, metal ground, 4, the coupling slit, 5, the radiating layer dielectric substrate, 6, radiation patch, 7, dc feeder, 8, the hole, 9, grounding probe, 10, variable capacitance diode.
Embodiment
With reference to Fig. 1～5, the present invention includes microstrip feed line 1, feed layer dielectric substrate 2, metal ground 3, coupling slit 4, radiating layer dielectric substrate 5, radiation patch 6 and dc feeder 7, accompany metal ground 3 between feed layer dielectric substrate 2 and the radiating layer dielectric substrate 5, microstrip feed line 1 is attached on the feed layer dielectric substrate 2, radiation patch 6 is attached on the radiating layer dielectric substrate 5, microstrip feed line 1 separates with radiation patch 6 usefulness metal grounds 3, and by one on metal ground 3 coupling slit 4 be coupled, feed layer dielectric substrate 2 adopts polytetrafluoroethylene to make, radiating layer dielectric substrate 5 adopts the ferroelectric barium strontium titanate to make, and dc offset voltage is added between radiation patch 6 and the metal ground 3 by dc feeder 7.
The ferroelectric that radiating layer dielectric substrate 5 is adopted can also be strontium lead titanate or calcium titanate lead.
The resonance frequency of electric tuning micro-band antenna is to determine by the size of the thickness of radiating layer dielectric substrate 5, dielectric constant and radiation patch 6 is common, other conditions are constant, the resonance frequency of antenna reduces when the dielectric constant of radiating layer dielectric substrate 5 increases, and the resonance frequency of antenna raises when the dielectric constant of radiating layer dielectric substrate 5 reduces.Ferroelectric dielectric constant is subjected to the influence of external dc bias voltage, when external dc offset voltage is added between radiation patch 6 and the metal ground 3 by dc feeder 7, also just be equivalent to be added in radiating layer dielectric substrate 5 two ends, the dielectric constant of the high more radiating layer dielectric substrate 5 of voltage is more little, the resonance frequency of antenna is just big more like this, change external dc offset voltage, just changed the resonance frequency of antenna, just realized electric tuning.
When external dc offset voltage is added between radiation patch 6 and the metal ground 3 by dc feeder 7, dc feeder 7 adopts the alternate high Low ESR low-pass filter structure of width, dc offset voltage can be do not stopped like this, but microwave signal spreads out of the outside by dc feeder 7 from radiation patch 6 direct current feed can be separated.
Electric tuning micro-band antenna adopts the mode of slit coupling, microstrip feed line 1 and radiation patch 6 are positioned at metal ground 3 both sides, be coupled by one on metal ground 3 coupling slit 4, the dc offset voltage that is added in like this between radiation patch 6 and the metal ground 3 just can not enter microstrip feed line 1, guaranteed the safety of feed, be convenient to the adding of dc offset voltage, and metal ground 3 separates microstrip feed line 1 and radiation patch 6, and the radiation of microstrip feed line 1 just can not exert an influence to the radiation of radiation patch 6.
Claims (1)
1. electric tuning micro-band antenna, comprise microstrip feed line, the feed layer dielectric substrate, metal ground, the radiating layer dielectric substrate, radiation patch and dc feeder, accompany metal ground between feed layer dielectric substrate and the radiating layer dielectric substrate, microstrip feed line is attached on the feed layer dielectric substrate, radiation patch is attached on the radiating layer dielectric substrate, microstrip feed line and radiation patch separate with metal ground, and by one on metal ground the coupling slit be coupled, described radiating layer dielectric substrate adopts ferroelectric to make, dc offset voltage is added between radiation patch and the metal ground by dc feeder, it is characterized in that: described dc feeder adopts the alternate high Low ESR low-pass filter structure of width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100174681A CN101017930B (en) | 2007-03-08 | 2007-03-08 | Electric tuning micro-band antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100174681A CN101017930B (en) | 2007-03-08 | 2007-03-08 | Electric tuning micro-band antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101017930A CN101017930A (en) | 2007-08-15 |
| CN101017930B true CN101017930B (en) | 2011-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100174681A Expired - Fee Related CN101017930B (en) | 2007-03-08 | 2007-03-08 | Electric tuning micro-band antenna |
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| CN102097680A (en) * | 2011-01-15 | 2011-06-15 | 广东通宇通讯股份有限公司 | Single-point feed double frequency hybrid antenna |
| CN102610922B (en) * | 2012-03-31 | 2013-12-04 | 北京邮电大学 | Dynamic tunable microstrip antenna used in complex radio-wave environment and tuning method thereof |
| CN102780092B (en) * | 2012-07-31 | 2014-06-04 | 电子科技大学 | Silicon integrated waveguide frequency adjustable slot antenna |
| US9698466B2 (en) * | 2013-05-24 | 2017-07-04 | Microsoft Technology Licensing, Llc | Radiating structure formed as a part of a metal computing device case |
| CN105576338A (en) * | 2014-10-16 | 2016-05-11 | 深圳市东方拓宇科技有限公司 | Method of adjusting working frequency of antenna radiation body and corresponding mobile terminal |
| CN105228334B (en) * | 2015-08-26 | 2018-10-02 | 昆山龙腾光电有限公司 | a kind of printed circuit board |
| CN107359410B (en) * | 2017-07-07 | 2020-06-09 | 哈尔滨工业大学 | Novel balanced Vivaldi antenna adopting additional dielectric layer loading technology and mixed type corrugated edge |
| US10557698B2 (en) * | 2017-11-30 | 2020-02-11 | Saudi Arabian Oil Company | Flexible strap antenna arrays for tank volume calibration and resonance frequency shift measuring methods using same |
| CN109004767B (en) * | 2018-09-06 | 2023-09-12 | 清华四川能源互联网研究院 | Wireless microwave energy taking system |
| CN109449580B (en) * | 2018-10-26 | 2023-12-05 | 集美大学 | Coplanar feed liquid crystal package |
| US10903568B2 (en) * | 2018-11-20 | 2021-01-26 | Nokia Technologies Oy | Electrochromic reflectarray antenna |
| CN111262002A (en) * | 2020-01-21 | 2020-06-09 | 深圳市易探科技有限公司 | Slot coupling microstrip antenna for 24GHz mobile sensor |
| CN113825271A (en) * | 2021-08-26 | 2021-12-21 | 电子科技大学长三角研究院(湖州) | Traditional chinese medicine heating box based on microwave heating |
| CN113745837B (en) * | 2021-09-13 | 2024-04-19 | 重庆大学 | Omnidirectional, vertical polarization and electric small filter antenna |
| CN113823906A (en) * | 2021-09-14 | 2021-12-21 | 南通大学 | Non-contact variable capacitor loaded bandwidth reconfigurable microstrip patch filter antenna |
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| CN1312597A (en) * | 2000-02-29 | 2001-09-12 | 朗迅科技公司 | Spliced antenna with wire ground plane |
| CN1720637A (en) * | 2002-12-03 | 2006-01-11 | 哈里公司 | High efficiency slot fed microstrip patch antenna |
| CN1795584A (en) * | 2001-04-11 | 2006-06-28 | 基奥赛拉无线公司 | Ferroelectric antenna and method for tuning same |
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2007
- 2007-03-08 CN CN2007100174681A patent/CN101017930B/en not_active Expired - Fee Related
Patent Citations (3)
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|---|---|---|---|---|
| CN1312597A (en) * | 2000-02-29 | 2001-09-12 | 朗迅科技公司 | Spliced antenna with wire ground plane |
| CN1795584A (en) * | 2001-04-11 | 2006-06-28 | 基奥赛拉无线公司 | Ferroelectric antenna and method for tuning same |
| CN1720637A (en) * | 2002-12-03 | 2006-01-11 | 哈里公司 | High efficiency slot fed microstrip patch antenna |
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| CN101017930A (en) | 2007-08-15 |
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